JPS6325992B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a throttle wire holding structure for a motorcycle.

Conventionally, the throttle wire is held by a guide pipe that protrudes downward from a pulley case fixed to the handlebar and has its lower end bent toward the vehicle body.

For this reason, the throttle wire is placed below the handlebar at a considerable distance from the handlebar, making the area around the handlebar complicated, degrading the aesthetic appearance, and preventing the throttle wire from hitting or getting caught on other objects. Moreover, there were problems such as the guide pipe colliding with an object and being damaged, or its attachment part loosening and facing in the wrong direction.

The present invention has been made in view of the above-mentioned conventional circumstances, and the object thereof is to provide a throttle wire that is arranged in an orderly manner, has an excellent appearance, and that can securely hold the throttle wire to prevent damage. The purpose is to provide a holding structure for

An example of the embodiment of the present invention will be explained with reference to the drawings. In the figure, 1 is a handle, 2 is a grip rotatably attached to the right end of the handle 1, 3 is a brake lever, and 4 is a master cylinder operated by the brake lever 3. , 5 is a pulley case, and 6 is a throttle wire.

The grip 2 adjusts the throttle opening degree by rotating the grip 2, and pulls and pushes two throttle wires 6 through pulleys 7 housed in a pulley case 5, which will be described later.

That is, the opening and closing operations of the throttle are both forcibly performed by the two throttle wires 6, forming a so-called forced opening and closing mechanism.

The throttle wire 6 is a so-called Bowden wire and is composed of an outer casing 6a and an inner cable 6b, each of which is held by a pulley case 5, and the holding structure thereof is shown in enlarged form in FIGS. 3 and 4.

The pulley case 5 is divided into upper and lower parts by two half members 8 and 8', and the handle 1 is mounted and fixed between the members 8 and 8'.
As shown in the figure, the front part of the case 5 has a substantially right triangular cross section (indicated by b in Figure 4), with its acute angle part 5c protruding forward and its hypotenuse part 5d facing downward. A projecting portion 5a is formed.

The pulley case 5 accommodates the pulley 7 at its base on the handle 1 side.

The pulley 7 is formed into a substantially disk shape and is rotatably fitted loosely around the outer periphery of the handle 1, and a support tube 7a is integrally provided on the outer end surface of the pulley 7.

The support tube 7a is loosely fitted around the outer periphery of the handle 1, passes through the pulley case 5, and projects outward, and the grip 2 is fitted to the projecting end thereof.

Therefore, the pulley 7 is connected to the grip 2 via the support tube 7a, is disposed coaxially therewith, and rotates integrally with the grip 2 as the grip 2 is rotated.

One end of the throttle wire 6 is connected to this pulley 7.

Throttle wire 6 is its inner cable 6b
is extended into the pulley case 5, and the cable 6b
The upper and lower halves of the outer periphery of the pulley 7 are hooked to the upper and lower halves of the outer periphery of the pulley 7 via drum-shaped hooking members 9, respectively.

As a result, the inner cable 6b is pulled and pushed in opposite directions by the rotation of the pulley 7.

The inner cables 6b each have a protrusion 5a formed from the outer periphery of the pulley 7 and having a substantially right triangular cross section.
and is turned toward the center of the handle 1 via a turning means provided along two inner surfaces 5b and 5b' that project forward within the projection 5a.

This turning means uses a pipe member 10 which is curved in an arc shape and has straight parts at both ends, and rollers,
A pulley or the like may also be used.

Incidentally, if the pipe member 10 is used as in this embodiment, the structure can be made simpler and more compact than rollers, pulleys, etc., and the degree of freedom in the direction of turning is greater.

Thus, the pipe member 10 is attached to the upper and lower half members 8, 8' through the respective fasteners 11 to the protruding portions 5a.
It is fixed to the inner surfaces 5b and 5b' of the protrusion 5a, and is locked to the side wall of the protrusion 5a via the flange 10a at its end on the vehicle body side.

The pipe member 10 projects parallel to the handle 1 at vertical intervals from the side wall of the projecting portion 5a on the center side of the handle 1, and the inner cable 6b is caused to project from the projecting end thereof.

Further, a lock nut 12 and an adjuster nut 13 are screwed onto the projecting end of the pipe member 10 from the side wall side of the projecting portion 5a, so that the length of the throttle wire 6 can be adjusted.

Further, the brake lever 3 is disposed so as to pass through the space a of the slope part of the pulley case 5, as shown in FIG. The brake lever 3 is configured to rotate in the direction of protrusion of the protrusion 5a, that is, in the front-rear direction, while the brake lever 3 is accommodated in the space a.

Thus, the brake lever 3 is disposed using the space a of the slope portion of the pulley case 5, and
The throttle wire 6 extends from the pulley case 5 almost along the handle 1, and is arranged neatly without separating from the handle 1.

Further, the brake lever 3 is offset downward from the center of the handle 1 so that it can be easily grasped from the grip 2.

Since the present invention is configured as described above, the throttle wire is turned toward the center of the handle within the protrusion of the pulley case that protrudes toward the front of the handle in a substantially right-angled triangular shape, and extends from the side wall of the protrusion substantially along the handle. In addition, since the brake lever can be arranged using the space on the slope of the pulley case, the pulley case, brake lever, and throttle wire can be arranged neatly and compactly along the handlebar, improving the aesthetic appearance.

In addition, since the throttle wire extends almost along the handlebar, it is less likely to hit or get caught on objects compared to a conventional guide pipe that is spaced below the handlebar, and even if it does hit, the throttle wire is Since it is directly held in the pulley case, it can effectively prevent damage and will not turn in the wrong direction.

Thus, the intended purpose can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the structure of the present invention, Fig. 2 is a plan view thereof, Fig. 3 is a partially cutaway plan view showing an enlarged main part, and Fig. 4 is a cross-sectional view taken along the line - - of Fig. 3. be. In the diagram, 1...handle, 2...grip, 5
. . . Pulley case, 5a . . . Projection, 5c . . . Acute angle portion, 5d .

Claims (1)

[Scope of Claims] 1. A pulley case is provided that houses a pulley that is arranged coaxially with the grip and rotates integrally with the grip, the pulley case is fixed to the handle, and the front part of the case has a substantially right-angled triangular cross section. One end of the throttle wire is connected to the pulley in the pulley case, and the wire is inserted into the protrusion of the pulley case. The brake lever is turned toward the center of the handle, extends from the side wall of the protruding part almost along the handle, and is pivotally supported with respect to the handle. A throttle wire holding structure for a motorcycle that is rotatably supported in the protruding direction. 2. The throttle wire holding structure for a motorcycle according to claim 1, wherein the means for turning the throttle wire toward the vehicle body within the protrusion of the pulley case is a pipe member.